“…Background 20 years ago, the authors of Card Shark (Bernstein, Millard, and Weal 2002) called for tighter loops between authoring and playtesting in sculptural hypertext. Our playtesting tool supports narrative designers' existing authoring strategies for IDN, which allow them to skillfully reason about player retellings, replay stories (Mitchell (2022)), and other forms of play in and around the story volume (Karth, Junius, and Kreminski (2022)). Grinblat describes the story volume of a given IDN as constructed in the player's mind through 'reparative play' in the course of one or more playthroughs Grinblat, Manning, and Kreminski (2021).…”